Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 15, Pages 4020-4024Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201800883
Keywords
colloidal synthesis; doping; oxygen evolution; soft template; ultrathin nanowires
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Funding
- National Natural Science Foundation of China [21431006, 21761132008, 51702312]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH036]
- National Basic Research Program of China [2014CB931800]
- Users with Excellence and Scientific Research Grant of Hefei Science Centre of CAS [2015HSC-UE007]
- Fundamental Research Funds for the Central Universities [WK2340000076]
- Recruitment Program of Global Youth Experts
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Ultrathin nanostructures are attractive for diverse applications owing to their unique properties compared to their bulk materials. Transition-metal chalcogenides are promising electrocatalysts, yet it remains difficult to make ultrathin structures (sub-2nm), and the realization of their chemical doping is even more challenging. Herein we describe a soft-template mediated colloidal synthesis of Fe-doped NiSe2 ultrathin nanowires (UNWs) with diameter down to 1.7nm. The synergistic interplay between oleylamine and 1-dodecanethiol is crucial to yield these UNWs. The insitu formed amorphous hydroxide layers that is confined to the surface of the ultrathin scaffolds enable efficient oxygen evolution electrocatalysis. The UNWs exhibit a very low overpotential of 268mV at 10mAcm(-2) in 0.1m KOH, as well as remarkable long-term stability, representing one of the most efficient noble-metal-free catalysts.
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